KRT-4 is a cable retractor designed for installing in a meeting room, classroom or other AV site. KRT-4 extends a variety of common AV connector types and is easy to install and use. Provides Convenient and Easy-to-Use Connecting - Pull the cable to extend up to 1.8m (5.9ft) from the installation site; the cable automatically locks in position to the desired length. When finished, pull the cable again and it retracts into the housing. Improved Design - Gentle retraction feature extends the life of the cable and connector. Simple and Flexible Installation Options - Install in compatible Kramer TBUS models or attach directly to the underside of a table with a few screws. Available in Most Common AV Connector Types - HDMI, VGA, audio (3.5mm), LAN, USB, USB-C, and DisplayPort.